JP2014001082A - Carbonizing and baking method, and carbonized and baked product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a carbonizing and baking method with which inside surfaces of a large amount of earthenware or the like are carbonized and baked even without using a closed kiln, in performing carbonization and baking.SOLUTION: When an inside surface of a work 1 such as an earthen teapot, an earthen pot, or the like consisting of a lid 3 and a vessel body 2, is to be carbonized and baked, a material 4 to be carbonized and baked such as charcoal, chaff, and sawdust is put into the inside of the vessel body 2, and subsequently the vessel body is covered with the lid 3, and subjected to heat treatment. In the heat treatment, a tunnel kiln or the like is used, the vessel body put on a carriage is transported from an inlet to an outlet, and heated and baked in this state. Then a carbonized and baked layer 5 is formed by carbonizing and baking the inside surface surrounded by the vessel body 2 and the lid 3. Also if necessary, another work such as a small teacup or the like is put into the inside space of the vessel body 2, and by being covered with the lid 3, another work is also carbonized and baked.

Description

  The present invention relates to a carbonizing and firing method for carbonizing and firing an inner surface of a pottery or the like, and more particularly, to a carbonizing and firing method capable of carbonizing and firing pottery or the like in a large amount using a tunnel kiln. is there.

  Conventionally, various carbonization firing methods for carbonizing the surface of pottery have been proposed. This carbonization firing method generally involves placing charcoal, rice husks, sawdust and earthenware in a sealable kiln (hereinafter referred to as “sealed kiln”), and then heating the sealed kiln for a long time in that state. The surface of the pottery is carbonized (Patent Document 1, etc.). If the surface of the pottery is carbonized and fired using a closed kiln like this, it is said that the water cluster in contact with the carbonized fired layer can be decomposed, so that the taste of water can be softened. .

JP 2001-294475 A

  However, the method of carbonizing and firing ceramics using such a closed kiln has the following problems.

  That is, in the conventional carbonization firing method, pottery, charcoal, rice husks, sawdust, etc. are put into a closed kiln and heated. Therefore, when trying to carbonize and fire a large amount of pottery, a large amount of pottery is placed in the closed kiln. Must be stacked. However, when pottery and the like are stacked in a closed kiln, it takes time to stack and take out the pottery. Moreover, when taking out the ceramics that have been carbonized and fired in this way, they can only be taken out after the ceramics are completely cooled, and it takes time to heat and fire the next ceramics. There was a problem that.

  Furthermore, as before, when charcoal, rice husks, sawdust, etc. are put into a closed kiln and heated, the larger the closed kiln, the larger the amount of charcoal, rice husk, sawdust, etc. A large amount of material was required and the cost was high.

  Accordingly, in order to solve the above-described problems, the present invention provides a carbonization and firing method in which when a ceramic ware or the like is carbonized and fired, the ceramics or the like can be carbonized and fired in large quantities without using a closed kiln. It is for the purpose.

  That is, in order to solve the above-mentioned problem, the present invention includes a container body having an opening and a lid that closes the opening of the container body, and at least carbonization that calcinates and burns the inner surface of the container body. In the firing method, a step of putting carbonized fired material such as charcoal, rice husk, sawdust, etc. in the container body, a step of covering the opening of the container body containing the carbonized fired material with the lid, and the lid And heating the container body and forming a carbonized fired layer on the inner surface of the container body.

  In this way, the container body and the lid can form a substantially sealed space inside, so that a large amount of carbonized and fired ceramics can be produced without using a conventional closed kiln. Will be able to. Moreover, since a small amount of carbonized and fired material can be put into the inner space of the container body and carbonized and fired, the material cost can be reduced.

  Further, in such an invention, when the inside of the container body is carbonized and fired, the container body with the lid is sequentially carried into a tunnel kiln and heat-treated, and at least a carbonized and fired layer is formed on the inner surface of the container body. Let it form.

  In this way, the container main body can be sequentially carried in the tunnel kiln and carbonized and fired, so that the work of heating and cooling in a closed kiln and then taking out becomes unnecessary, and the carbonized and fired container is eliminated. The main body can be produced in large quantities.

  In addition, in such an invention, in the space surrounded by the container body and the lid body, the carbonized fired material and other works are put, the lid is covered with the lid body, and the inner surface of the container body And a carbonized fired layer is formed on the surface of the other work.

  If it does in this way, the carbonization baking layer can be simultaneously formed in the inner surface of a container main body, and the surface of other works, and the cost at the time of carrying out the carbonization baking of other works can also be reduced.

  In the present invention, in the carbonization firing method comprising a container main body having an opening and a lid for closing the opening of the container main body, and carbonizing and firing at least the inner surface of the container main body, the interior of the container main body A step of putting carbonized calcined material such as charcoal, rice husk, sawdust, a step of covering the opening of the container main body containing the carbonized calcined material with the lid, and heating the container main body covered with the lid, And a step of forming a carbonized fired layer on the inner surface of the container main body, so that a substantially sealed space can be formed inside the container main body and the lid without using a conventional closed kiln. It will be possible to produce a large amount of carbonized and fired ceramics. In addition, since a small amount of carbonized and fired material can be placed in the inner space of the container body and carbonized and fired, the material cost can be reduced.

The figure which shows the earthenware which consists of a container main body and a cover body in this Embodiment The figure which shows the container main body in the same form Schematic diagram showing the steps of the carbonization firing method in the same form The figure which shows the carbonization baking process in the form

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  The method for carbonizing and firing the earthenware in this embodiment is such that the inner surface of the earthenware (hereinafter referred to as “work 1”) composed of the container body 2 and the lid 3 is carbonized and fired such as an earthen jar or a pot as shown in FIG. The first step of applying glaze to the inner surface of the unbaked container body 2 and the introduction of carbonized fired material 4 such as charcoal, rice husk, sawdust etc. inside the container body 2 to which the glaze has been applied. A second step and a third step in which the lid body 3 is placed on the container body 2 charged with the carbonized fired material 4 and heated in a tunnel kiln or the like, whereby the inner surface of the container body 2 is carbonized and fired. The carbonized and fired product 10 can be manufactured. Hereinafter, each process in this Embodiment is demonstrated in detail.

  First, the work 1 to be carbonized and fired includes a container body 2 having a large opening 21 (see FIG. 2) as shown in FIG. 2, and a lid 3 (see FIG. 1) covering the large opening 21. For example, an earthen jar with a lid or a clay pot can be mentioned as an example. In the present embodiment, a clay vase with a lid is described as an example as a drawing, but the present invention can also be applied to a vase or a decorative article without a lid. In addition, when carbonizing and firing a vase or a decorative article, a large opening is closed using a separately prepared lid, and thereby the inner surface of the container body is carbonized and fired.

  In the first step (FIG. 4: ST2) in forming the carbonized fired layer 5 on the inner surface of the work 1 as described above, glaze is applied to the inner surface and the outer surface of the unbaked container body 2 (FIG. 3 ( a)) By this, the unbaked surface is covered with a glassy substance so as to have water resistance. After applying this glaze, let it dry for at least one hour.

  In the next second step (FIG. 4: ST3), as shown in FIG. 3 (b), the carbonized and fired material 4 is put into the dried container body 2. As the carbonized fired material 4, for example, charcoal, rice husk, sawdust and the like can be used. The amount of the carbonized fired material 4 to be charged can be adjusted as appropriate, but it is preferably about 2/3 to 3 full of the container body 2. Then, after the carbonized and fired material 4 is introduced in this way, the inner space is closed by covering the opening 21 with the lid 3 (FIG. 3C). In addition, in the state where the lid 3 is covered in this way, the pouring spout 22 and the air hole 31 of the earthen bottle are in a small open state, and thus the inside is not strictly sealed, but in this way Even when a small opening exists, it does not become a big problem in carbonization firing. However, when such spouts 22 and air holes 31 are formed large, the portions are filled with clay 6 as necessary.

  In the next third step, the work 1 is placed in a tunnel kiln (not shown) and heated in such a state that the carbonized fired material 4 is enclosed in the inner space (FIG. 4: ST4). This tunnel kiln has an inlet and an outlet that are open at both ends, and the carriage on which the work 1 is placed is slowly moved in the tunnel and carried out from the opposite outlet side. Here, the firing temperature is 1000 ° C. to 1200 ° C., and the time from carry-in to carry-out is 30 hours to 40 hours. During this time, the work 1 is heated at a high temperature in the tunnel kiln, but the inside of the container body 2 covered with the lid 3 is in a reducing atmosphere where the supply of oxygen is cut off, and carbonization firing is performed there. The material 4 is burned to form a carbonized fired layer 5 on the surface (FIG. 3 (d)).

  And after making it carbonize and calcinate in this way, in the state which the carbonization baked product 10 cooled, the clay 6 with which the spout 22 or the air hole 31 was filled is removed as needed. At this time, the clay 6 packed in the spout 22 and the air holes 31 can be easily taken out from the spout 22 and the air holes 31 because the water evaporates and contracts by heating. And while removing the clay 6 in this way, the cover body 3 is opened, the carbonization baking material 4 which remained inside is removed, and an inner surface is wash | cleaned. Thereby, the carbonization baking product 10 which formed the carbonization baking layer 5 only in the inner surface of the container main body 2 and the inner surface of the cover body 3 can be manufactured.

  Thus, according to the above embodiment, when the inner surface of the work 1 composed of the lid 3 and the container body 2 is carbonized and fired, the carbonized fired material 4 such as charcoal, rice husk, sawdust, etc. is placed inside the container body 2. Since the inner surface is carbonized and fired by putting it in the lid 3 and heating in that state, the carbonized fired layer 5 can be formed on the inner surface without using a conventional closed kiln. become able to. Thereby, it becomes possible to produce the carbonized fired article 10 in large quantities using a tunnel kiln or the like. Furthermore, since a small amount of the carbonized and fired material 4 can be put into the inner space of the container body 2 and carbonized and fired, the material cost can be reduced.

  Further, since the container main body 2 can be sequentially put in the tunnel kiln and carbonized and fired, the work of sealing and heating and cooling the sealed kiln as before and then removing the carbonized and fired product 10 becomes unnecessary. Therefore, the container body 2 can be mass-produced.

  In addition, this invention is not limited to the said embodiment, It can implement in a various aspect.

  For example, in the above-described embodiment, the earthen jar composed of the lid body 3 and the container body 2 has been described as an example of the work 1, but such a carbonization firing method is applied to the work composed of only the container body 2. You can also. In this case, a lid that closes the large opening of the container main body is prepared separately, and the carbonized and fired material 4 is put in, and the lid is covered with this lid to perform carbonization and baking. Then, the lid is removed to obtain a work in which the carbonized fired layer 5 is formed only on the inner surface of the container body 2.

  In the above-described embodiment, the carbonized and fired material 4 is put into the container body 2 to be carbonized and fired. However, other works that can be stored in the inner space of the container body 2 (for example, small cups) And a carbonized and fired layer may be simultaneously formed on the inner and outer surfaces of the work by the carbonized and fired material 4 put into the container body 2.

  Furthermore, in the above embodiment, the carbonized fired layer 5 is formed after applying glaze. However, in the case of making a decorative article, the carbonized fired layer 5 is formed without applying glaze or the like. It may be.

  In addition, in the above embodiment, the tunnel kiln is used for heating as another kiln, but other kilns can be used without being limited to the tunnel kiln.

  Moreover, in the said embodiment, although the opening part 21 of the container main body 2 was obstruct | occluded using the cover 3, the container main body 2 was reversed and placed on a stand, and the stand and the container main body 2 The carbonized fired material 4 may be put into the inner space and fired.

  INDUSTRIAL APPLICABILITY The present invention can be used in the field of enabling mass production of a container having a carbonized fired layer formed inside.

Work ... 1
Carbonized fired product ... 10
Container body 2
Large opening ... 21
Spout ... 22
Lid ... 3
Air hole ... 31
Carbonized fired material ... 4
Carbonized fired layer 5
Clay ... 6

Claims (4)

In a carbonization firing method comprising a container body having an opening and a lid that closes the opening of the container body, and at least carbonizing and firing the inner surface of the container body,
Putting carbonized fired material such as charcoal, rice husk, sawdust into the container body; and
A step of covering the opening of the container body containing the carbonized fired material with the lid,
Heating the covered container body, and forming a carbonized fired layer on the inner surface of the container body;
The carbonization baking method characterized by comprising. 2. The carbonization and firing step is to heat-treat the container body covered with the lid sequentially into a tunnel kiln and to form a carbonized and fired layer on at least the inner surface of the container body. Carbonization firing method. The step of carbonizing and firing includes placing the carbonized and fired material and other works in a space surrounded by the container body and a lid, and heating the lid by covering the lid with the lid. The carbonization firing method according to claim 1, wherein a carbonization firing layer is formed on the inner surface of the material and the surface of the other work. A container body having an opening;
A lid that closes the opening of the container body,
A carbonized fired product in which a carbonized fired layer is formed only on the inner surface surrounded by the container body and the lid.

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